<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>恒等和恒不等</title>
		<script>
			var s1="23";
			var s2=23;
			var b1="false";
			var b2=false;
			alert(s1==s2);
			alert(b1==b2);
			alert("恒等于？"+(s1===s2));
		</script>
	</head>
	<body>
	</body>
</html>